Unbreak the build under linux_keep_shadow_stacks. Add an unreachable return statement to work around a bug in GCC when -finstrument-functions is used, which happens when linux_keep_shadow_stacks is used (for hunting memory leaks).
Unbreak the build under linux_keep_shadow_stacks.
Add an unreachable return statement to work around a bug in GCC when
-finstrument-functions is used, which happens when linux_keep_shadow_stacks is
used (for hunting memory leaks).

BUG=none
TEST=build sync w/ 'linux_keep_shadow_stacks':1 in ~/.gyp/include.gypi; trybots.

Review URL: http://codereview.chromium.org/6599007

git-svn-id: dd90618784b6a4b323ea0c23a071cb1c9e6f2ac7@76096 4ff67af0-8c30-449e-8e8b-ad334ec8d88c

wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser,wistoch/meego-app-browser